Datasheet Texas Instruments UC2846QTR — 数据表
| 制造商 | Texas Instruments |
| 系列 | UC2846 |
| 零件号 | UC2846QTR |
电流模式PWM控制器20-PLCC -40至85
数据表
价格
状态
| Lifecycle Status | Active (Recommended for new designs) |
| Manufacture's Sample Availability | No |
打包
| Pin | 20 |
| Package Type | FN |
| Industry STD Term | PLCC |
| JEDEC Code | S-PQCC-J |
| Package QTY | 1000 |
| Carrier | LARGE T&R |
| Device Marking | UC2846Q |
| Width (mm) | 8.96 |
| Length (mm) | 8.96 |
| Thickness (mm) | 4.06 |
| Pitch (mm) | 1.27 |
| Max Height (mm) | 4.57 |
| Mechanical Data | 下载 |
参数化
| Approx. Price (US$) | 1.39 | 1ku |
| Control Method | Current |
| Duty Cycle(Max)(%) | 50 |
| Frequency(Max)(kHz) | 500 |
| Gate Drive(Typ)(A) | 0.5 |
| Operating Temperature Range(C) | -40 to 85 |
| Package Group | PLCC |
| Rating | Catalog |
| Special Features | Error Amplifier Multi-topology Soft Start Synchronization Pin |
| Topology | Boost Flyback Forward Full-Bridge Half-Bridge Push-Pull |
| UVLO Thresholds On/Off(V) | 7.7/6.95 |
| Vin(Max)(V) | 40 |
| Vin(Min)(V) | 7.7 |
生态计划
| RoHS | Compliant |
| Pb Free | Yes |
应用须知
- Modeling Analysis and Compensation of the Current-Mode ConverterPDF, 189 Kb, 档案已发布: Sep 5, 1999
As current-mode conversion increases in popularity several peculiarities associated with fixed-frequency peak-current detecting schemes have surfaced. These include instability above 50% duty cycle a tendency towards subharmonic oscillation non-ideal loop response and an increased sensitivity to noise. This application note attempts to show that the performance of any current-mode converter c - U-93 A New Integrated Circuit for Current Mode ControlPDF, 411 Kb, 档案已发布: Sep 5, 1999
Advantages of current-mode control over conventional PWM approaches to switching power converters include automatic feed-forward automatic symmetry correction inherent current-limiting simple loop-compensation enhanced load-response and the capability for parallel operation. This application note introduces the first control integrated circuit specifically designed for this topology defines - DN-45 UC3846 UC3856 and UCC3806 Push Pull PWM Current Mode Control ICsPDF, 27 Kb, 档案已发布: Sep 5, 1999
The UC3856 is a pin-for-pin-compatible high-performance bipolar version of the industry standard UC3846. It can replace the UC3846 with few circuit modifications and it features increased speed higher gate-drive current and reduced propagation delays. The UCC3806 is a BiCMOS pin-for-pin compatible ultra-low-power version ideal for battery low-power and high-speed applications. The UCC3806 - DN-62 Switching Power Supply Topology Voltage Mode vs. Current ModePDF, 66 Kb, 档案已发布: Sep 5, 1999
This design note explains the differences between voltage-mode and current-mode switching power supply topologies. It includes a circuit diagram for each mode and suggests criteria for choosing which mode to use.
模型线
系列: UC2846 (9)
制造商分类
- Semiconductors > Power Management > Offline and Isolated DC/DC Controllers and Converters > PWM and Resonant Controller